It's fiction, but I recommend "The Virtues of War" by Steven Pressfield. It's a novel (based on history, but certainly dramatized) about Alexander's march to the East.
Pressfield's books are great. I'd additionally recommend following up the Virtues of War with The Afghan Campaign -- which is also about Alexander, but focused entirely on the time he spent in Afghanistan. There are some astounding parallels to today.
Then, when you're done, Gates of Fire is a classic (Pressfield's novel on the Battle of Thermopylae). Tides of War is on the Peloponnesian War that followed.
I second this. A great story and it focuses, as the title implies, on the virtues of the warrior. Lots of those virtues can be applied to entrepreneurship, in my opinion.
Then, when you're done, Gates of Fire is a classic (Pressfield's novel on the Battle of Thermopylae). Tides of War is on the Peloponnesian War that followed.